Anyone with AMPEG V2 /V4 experience?

[pslebow]

Typo? You're too kind. Good catch on the parts list. I didn't even think to look there. Sure makes it more difficult to diagnose a circuit if the schematic is suspect. Forces one to have to know a little something about tube circuits.

Is there a rule of thumb for DC voltage for a given RMS AC input. I thought capacitor values wouldn't matter too much under no load and that ripple would be the main impact. For 444vac giving 626v peak, where does all that go? ESR?

[g1]

Yes you do have to spend a bit of time back and forth with the voltages on those schematics. The drawings are good, but the numbers don't always add up. I take them as a rough guideline but not precision and they do seem to be more error prone than some other manufacturers.

As for the supply losses, the amp is unloaded but there is still a load on the supply, running all the idling tubes, etc. So there is some discharge and ripple. So you don't get the full peak value as DC. Not sure if there is a rule of thumb as it will be relative to the draw on the supply.